Cap-feeding mechanism for riveting-machines.



A. L. LILLEY. CAP FEEDING MECHANISM FOR RIVETING MACHINES- APPLICATIONFILED NOV- IU. 1915. 1 17 91 1 Patented Mar. 2&1916.

2 SHEETSSHEET I.

A. L. LILLEY.

CAP FEEDING MECHANISM FOR RIVETING MACHINES.

APPLICATION FILED NOV. I0 I9I5.

fil .5.

belt which are a rs nice.

ALFR E D L. LILLEY, 0F HARTFORD,- CONNECTICUT.

I CAP FEEDING MECHANISM FOR'RIVETING-MACHINES.

'lb all whom it may concern.

Be it known that I, Anrnsn L. LiLLnY, acitizen of the United States.residing at Hartford, in the county-of Hartford and State ofConnecticut, have invented a new and useful Improvement in Cap-FeedingMechanism for Rivetinghl'achines, of which the following is aspecification.

This invention relates to a mechanism which is particularly designed forfeeding hollow caps to tubular rivets in a machine which isespecially'adapted for fastening together parts of harness and otherheavy leather goods.

The object of'the invelntion'is for feeding rounded hollow caps intoposition to receive the ends of the. rivets, a mechanism adjustable forrivets of different lengths which is inexpensive to build. easy to applyto riveting machines as at present built, reliable in action and durablein use.

. Figure 1 of the accompanying drawings shows a side elevation of a wellknown tubular riveting machine provided with a hollow cap feedingmechanism which embodies this invention. Fig. 52 shows on larger scale afront elevation, with parts in to provide section. of the verticallymovable anvil, the,

cap guide, and the mechanism for tran sfer ring the caps one at a timefrom the end of the feed trough into the cap guide above the upper endof the anvil. Fig. 3 shows a. plan of the cap guide the slide and themeans which locks the slide and prevents the machine frombeing operatedif there is no cap 'in position to be-passed into' the cap guide abovethe anvil. Fig. 4 is.a.front View, with parts in section. illustratingthe manner of locking .the anvil. in its raised position. that is, inthe position it occupies when the cap and rivet are being put together.Fig. 5 is a similar view illustrating the position of the parts when theanvil is being unlocked so that it may descend into position to receiveanother-cap. Fig. 6 is a detail view of the front end of the operatingtreadle. Fig. 7 is a, sectional view of the cap-hopper, th picks thecaps from the hopper and delivers them to the feed trough; and theplates for agitating the caps in the hop-' per. Fig.8 is a sectionsljiowing the method of jointing the lever which raises and lowerstheanvil so that it will slip and not cause damage to the parts in case anobstruction interferes with their free work- 'euously in the hopper 9.

carried into the feed trough 12.

and its support, and;-

specification of Letters Patent Patented Mar. 28, 1916. Applicationfiled November 10, 1915.

Serial No. 60,689.

ing. Fig. 9 shows a rivet and cap before they are assembled. Fig. 10'shows a rivet and cap after they are assembled.

The headed rivets 1 are deposited promisand by common mechanism areselected and allowed to feed through the trough 3 down to the deliverymouth at. The rivets are forced down'from the delivery month by thepunch 5 which is connected with a lever 6 that is pivoted to the top ofthe frame and is reciprocated by the crank rod 7. This part of themachine is old and in common use, and as the parts are well known theyare not herein shown and described in detail.

The caps 8, which are cup-shaped, sheet metal articles, circular in'outline with rounded edges and openings into them from oneside only,are thrown promiscuously into the hopper 9. From this hopper those whichhave their openings downward are picked by the pins 10 on the belt 11and The feed belt passes around wheels 13, the aXle of one of which hasa pulley l4 driven by a belt 1?; from a pulley 16 on a shaft having avpulley 17 that is driven by a belt 18 from a pulley 19 on the driveshaft 20. Connecting up the parts in this manner causes the feed belt tomove slowly, but with sufficient speed to keep the feed trough filledwith caps. Plate.- 21 are arranged to projectinto the bottom of thehopper to agitate thecaps so that they will be more readily picked up bythe pins on the feed belt. These plates are lifted by a rod QQ'that ispivoted to the frame and extends rearwa-rdly so as to be engaged by anear 23 clamped on the crank rod. A pin 24. which connects and guides thelower ends of the plates is engaged by the rod so that the plates arelifted each time the punch is forced down by the crank mechanism. Thefeed trough receives the caps with the openings down and it is curvedaround so that at its discharge end the caps lie with their open sidesup.

The discharge end of the feed trough opens into a channel 25.111 whichmoves a slide 26. \Vhen the Slide is drawn out its front end is back ofthe opening from the discharge end of the feed trough. Vhen the slide ismoved in its front end pushes a cap along the channel from the dischargeby theforked upper end of an arm 30 on an arbor 31 attached to which isa lever 32. The 'end of this lever is by the rod 33 con nected with thefoot pad 34 of the operating treadle 35. A spring 36 normally holds therod up and the slide drawn out. The fobt pad is hinged to the treadle sothat it has a slight movement independent thereof. When the foot pad isfirst depressed the slide is pushed in so as to carry a cap to the capguide. Further downward movement of the foot pad then depresses thetreadle and through the rod 37 operates the common clutch mechanism (notshown) always pro vided in such machines, in the usual. manner forsetting the machine in operation. A pawl 38 is held by a spring 39 withone end projected into a slot 40 in the transfer slide. The other end ofthe pawl is engaged by a pivoted finger 41, the front end of whichprojects into the cap channel in front of the discharge end of the feedtrough. If there is a cap in the slide channel, shown in Fig. 3, whenthe slide moves forward this cap engages the fingerand oscillates it sothat the pawl is turned out of the slot, allowing the slide to moveinward. If there is no cap in the channel the end of the pawlobstructsthe movement of the slide, and when the slide cannot move in, thetrcadle cannot be depressed and the clutch thrown in for setting themachine in operation; that is, by means of this mechanism if there is nocap in position to be fed into the cap guide above the anvil, themachine cannot be operated.

The cap guide 28 is a long tube with its exterior threaded and turnedinto the end of the lower part of the frame 42 so that it may beadjusted up and down according to the lengths of the rivets. The capopening 27 into theguide is some distance below the upper end. Thisenables a piece of work with downwardly projecting sides to be placedover the cap guide and beneath the punch so that the parts of the workcan be fastened by a rivet and cap. If the cap opening was at the top ofthe cap guide and the feed trough came to it the trough and othermechanisms would interfere with such pieces of work which are common,particularly in the manufacture of harness parts.

The anvil is a long round rod 29 with its lower end adjustably set intoa block 44 that is movable up and down between supporting and guidingplates 45, which at the bottom are fastened to the base 43 and at thetop to the frame 4:2. The anvil block is connected with a block 46 thatis also movable up and down the guide plates. This connection betweenthe blocks is yielding and is made by the screw 47 and spring 418, whichthrusts between the head of the screw and the plate L9 which is securedto the lower end of the block 44. The anvil blocks are raised andlowered by the engagement of the forked front end of the lever 50 with astud 51 that is set into the block 46. The

rear end of this lever is frictionally clamped by the screw 52 on thehub 53 of the lever 5 t, which on its rear end has a roll 55traveling inthe cam slot 56. As a result of the frictional joint between theselevers, if the anvil or the blocks should become obstructed, theconnection will slip so that the mechanisms will not be injured. Securedto the block 46, and traveling up and down therewith, are spring arms57. When the anvil blocks reach the upper limit of'their movement thesespring arms engage pins 58 mounted in the guide plates, and force theminto sockets 59 in the block 44, and thus lock that block with the anvilraised. After the cap and rivet have been set together by the blov ofthe punch the anvil blocks are moved downward. During the first part ofthe movement the lower block 46 moves do'wna short distance, the spring18 allowing this. After the block l6 has been lowcred sufiiciently tocarry the spring arms away from 'the locking pins the pins are drawn outby the springs 60 that are fastened to the guide plates, and then theblock 44: and anvil can move down full distance.

By means of the mechanism. described, which can be attached to machinesin common use without change in any of the present mechanism, except thecap guide, the hollow caps are positively and surely fed above the anvilin such a position that large irregular pieces of work can be placedbetween the anvil and punch and riveted. These caps thus placed arecarried up positively in an. accurate guide to the lower ends of therivets, and before the parts come together the anvil is positivelylocked so that powerful blows can. be struck on the rivets for causingtheir ends to expand into the caps. The anvil not only positively lockedwhen receiving the blow, but it is surely released, and should itsmovement be obstructed none of the parts will be damaged. Furthermore,the machine cannot be operated if there is no cap to be fed and carried,up to the lower end of the rivet. The anvil is easily adjusted forrivets of varying length by turning it more or less into the anvilblock. The cap guide can be raised or lowered by screwing it up or down,and the transverse feed mechanism can also be raised or lowered.

The invention claimed is;

1. The combination with a machine having a reci 'n'ocating rivet punch,of mechanism for feeding and supportingcaps beneathv the punchcomprising a hopper, means for removing caps from the hopper, a feedtrough for conducting caps from the hopper, a cap guide fourcceiving thecaps, mechanism for transferring the caps one at a time from the feedtrough into the cap 7 block to which the .port a cap against nism forfeeding reciprocating theanvil, and mechanism-for locking the anvil sothat it will rigidly supdownward movement 1 when the rivet is driveninto it by therivet punch.

2. The combination with a machinehav ing areciprocating" rivet punch, ofmechaand supporting caps becomprising a hopper, caps froni'the hopper, a

neath the punch means for' removing feed trough for conductingcaps fromthe hopper, a channel for receiving caps at the lower end of the feedtrough, a cap guide for receiving the caps, mechanism for pushing thecaps from the channel guide, an anvil movable up and down in the capguide for lifting the'caps from entrance position to setting position,and mechanism.

for locking the anvil and causing it to resist the blow when the rivetsare driven down into the caps by the rivet punch.

A mechanism for feeding caps comprising a hopper, means for withdrawingcaps from the hopper, a feed trough leading from thehopper, a cap guide,mechanism for transferring caps one at atime from the feed trough to thecap guide, an anvil movable up and down in the cap guide, mechanism forraising and lowering theanvitpins for locking the anvil in its raisedposition, and means for moving the pins into and out of lockingposition. 'v

4. A mechanism for feeding caps comprising a hopper, means forwithdrawing caps from the hopper, a feed trough leading from the hopper,a cap guide, mechanism for transferring caps one at a time from the feedtrough to the cap guide, an anvil mow able up and down inthe cap guide,an anvil anvil is adjustably connected. mechanism forraising andlowering the block, and means for locking the block. in its upperposition while-a cap is being set bloclc carrying tlie anvil, mechanismfor raising and loweringthe block,

pins for locking the block in its upper position,

' means connected with the block for moving the pins into lockingposition, and means for releasing the block.

6. A cap feeding attaclnnent'for a riveting machine conmrisinga capfeeding mechanism, a cap guide, mechanism for transferring caps from thefeeding mechanism to the guide, an operating treadle, connections beinto the cap the cap guide above the ,nism for raising mechanism fortween the treadle and the transfer mechanism, an anvil movable in thecap guide, mechanism for raising and lowering the anvil, and mechanismfor temporarily locking the anvil in its raised position.

7. A cap feeding attachment for a riveting. machine comprising"mechanismfor feeding caps, a cap guide; an anvil movable up and down in the capguide, mechanism for raising and lowering the anvil,-mechanismindependent of said raising and lowcring mechanism for temporarilylocking position, mechanism for raising and lowering the anvil,1nechanism for locking the anvil in its upper position, mechanism fortransferring caps to anvil, an operating treadle, and a connection fromthe operating treadle to the transfer mechanism for reciprocating saidmechanism. Y

9. A cap feeding attachment for a riveting machine comprising mechanismfor feeding caps, a cap guide, an anvil movable up and downin the'capguide, meeha- V and lowering the anvil, mechanism for locking the anvilin its upper position, and means carried by the'anvil for causing saidlocking mechanism to lock the anvil in its upper position.

a 10; A cap feeding attachment for a riveting machine comprising feedingmechanism,

a cap guide, an anvil movable up and down in the'cap guide, mechanismfor raising and lowering the anvil, and mechanism engaged by the upwardmovement of the anvil for locking the anvil in its upper position.

11. A eap feeding attachment for a riveting machine comprising mechanismfor feeding caps,-a cap guide, an anvil movanl'e up and down in thecapguide, mechanism for raising and mechanism for locking theanvil in itsraised position, mechanism for transferring caps from the feedingmechanism into, the

rap guide above the anvil, an operating treadlc, a connection betweenthe o 'aerating treadle and the transfer mechanism,-and preventing themovement of lowering the anvil,

the operating treadle in case there is no cap to be transferred into thecap guide.

12. A cap feeding-attachment for a riveting machine comprising mechanismfor feeding caps, a cap guide, an anvil movable up and down in ,the capguide, mechanism the anvil, mechafor raising and lowering nism forlocking the anvil in its raised position, mechanism for transferringcaps from the. feeding mechanism into the cap anvil block, and

position,

guide above the anvil, an operating treadle, a connection between theoperating treadle and the transfer mechanism, and mechanism forobstructing the movement of the transfer mechanism when there is no capin front of it to be transferred into the cap guide.

13. An attachment for a riveting machine comprising a cap feedingmechanism, a cap guide, an anvil movable up and down in the cap guide,an anvil block, mechanism for raising and lowering the anvil block, andmechanism independent of said raismg and lowering mechanisn'i fortemporarily locking the anvil block in its upper position. I

14. An attachment for a riveting machine comprising a cap feedingmechanism, a cap guide, an anvil movable up and down in the cap guide,an anvil block, mechanism for raising and lowering the block, andmechanism actuated by the upward movement'oi the block -for'locking theblock in its upper said mechanism being released bv the downwardmoven'icnt oi the block for unlocking the same;

15. An attachment r'or a, rivetii'ig machine comprising a cap feedingmechanism, cap guide, an anvil movable up and down in the cap guide, asectional anvil block, mechanism for raising and lowering the mechanismactuated by the upward movement of the anvil block locl ing said bloclrin its upper position;

16. An attachment for a riveting mas chine'comp sing a cap "feedingmechanisn'i, a cap guide, an anvil movable up and down in the cap guide,a sectional anvil block,

l'nechanism for raising and lowering the anvil block, mechanism forlocking the anvil block in its upper position, and means carried by thelower section =of the anvil block for engaging the locking mechanism onits upward movement and releasing the locking mechanism on its downwardmovement.

17. An attachment for a riveting machine its upper position, and meansfor Withdrawing the locks and releasing the anvil block when theyielding block is moved down- 18. An attachment For .1 iii eting machinehaving an ad ustable cap guide, an ad1ustable anvil movable up an.d'-down in the cap guide, a block carrying said anvil, a block vieldinglyconnected to the anvil block, n'iechanism for 'aising and lowering saidblocks, pins adapted to engage and lock the anvil block in its upperposition, and springs carried by the yielding block and adapted toengage the locking pins when the blocks move up and to release thelocking pins hen the blocks move down.

.fiLFR-ED L. LILLEY.

